36 • vacon
INSTALLATION
5
C
A
NK5_2
A
2
A
2
D
B
A
B
5.2 Cooling
Enough free space shall be left around the AC drive to ensure sufficient air circulation, cooling as well as
maintenance. You will find the required dimensions for free space in the tables below.
If several units are mounted above each other the required free space equals C + D (see figure below).
Moreover, the outlet air used for cooling by the lower unit must be directed away from the air intake of the
upper unit.
The amount of cooling air required is indicated below. Also make sure that the temperature of the cooling
air does not exceed the maximum ambient temperature of the converter.
5.2.1
FR4 to FR9
Type
Dimensions [inch]
A
A
2
B
C
D
0004—0012 NXS2
0003—0012 NX_5
0.79
0.79
3.94
1.97
0017—0031 NXS2
0016—0031 NX_5
0.79
0.79
4.72
2.36
0048—0061 NXS2
0038—0061 NX_5
0004—0034 NX_6
1.18
0.79
6.3
3.15
0075—0114 NXS2
0072—0105 NX_5
0041—0052 NX_6
3.15
3.15
11.81
3.94
0140—0205 NXS2
0140—0205 NX_5
0062—0100 NX_6
3.15
5.91
3.15
11.81
7.87
0261—0300 NXS2
0261—0300 NX_5
0125—0208 NX_6
1.97
3.15
15.75
9.84
(13.78**)
Table 5-10. Mounting space dimensions
Figure 5-11. Installation space
A
= clearance around the freq. converter (see also
A
2
and B)
A
2
= clearance needed on either side of the AC drive for fan
change (without disconneting the motor cables)
** = min. clearance for fan change
B
= distance from one AC drive to another or distance to
cabinet wall
C = free space above the AC drive
D = free space underneath the AC drive
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